Home / 3,989.11-5,505.15-3,324.85

Finding the Fourth Proportional to 3,989.11, 5,505.15 and 3,324.85

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Solution

The fourth proportional to 3,989.11, 5,505.15 and 3,324.85 is: 4,588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.11 : 5,505.15 = 3,324.85 : x
  2. Step 2: Convert to fraction form
    3,989.11/5,505.15 = 3,324.85/x
  3. Step 3: Cross multiply
    3,989.11x = 5,505.15 × 3,324.85
  4. Step 4: Simplify right side
    3,989.11x = 18,303,753.83
  5. Step 5: Solve for x
    x = 18,303,753.83/3,989.11
  6. Step 6: Final answer
    x = 4,588.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.